"Again, I’d advise you to litigate the case properly or move on with your life."
My friend, as someone with a few more years on this planet than you, and as someone who has had to wrestle with some things, let me say that this is the best advice you will ever get.
That's not said to discount anything you went through. It's said for your own well-being. Ask yourself who is being hurt by focusing your life on "how they did you dirty." The answer is solely, You. No one else is losing sleep over it. It's only you being hurt. You seem to be 'renting a large space' in your head to it, which is only going to hold you back in life. You need to evict it.
The past cannot be changed. For your own benefit and well-being, the question is how you make your life better tomorrow and the day after that. The first step is to stop focusing on something in your past, that cannot be changed.
dion gave it to you straight - you need to move your life forward - either properly litigate it, or find a way to let it go. My gut says the latter is a better option, regardless. Life is short and humbly, you've spent far too long being a victim, even if you were. The world doesn't care. I don't know the details of exactly what happened, and frankly, for the purpose of your own outcome, I don't care. Unless an attorney on contingency thinks you can get life-changing money, the only choice for your best outcome, is to let it go. It may seem difficult at this point, but remember that as bad as you think you have it, there are millions of people on this planet who have it far worse. I say this next part from a place of self-reflection, but please find a way to live your life from a place of gratitude. Instead of focusing on how you've been wronged, find a way to be thankful for what you DO have. If you can truly do that, the negative goes away. It won't be able to rent space in your head.
You may not be ready to hear this yet in your life, and if not, I hope one day you are.